[PATCHv9-rebased2 02/37] mm-thp-make-swapin-readahead-under-down_read-of-mmap_sem-fix
From: Kirill A. Shutemov <hidden>
Date: 2016-06-15 20:06:07
Also in:
linux-fsdevel, lkml
Subsystem:
memory management, memory management - thp (transparent huge page), the rest · Maintainers:
Andrew Morton, David Hildenbrand, Lorenzo Stoakes, Linus Torvalds
Passing 'vma' to hugepage_vma_revlidate() is useless. It doesn't make use of it anyway. Link: http://lkml.kernel.org/r/20160530095058.GA53044@black.fi.intel.com Cc: Ebru Akagunduz <redacted> Cc: Hugh Dickins <hughd@google.com> Cc: Michal Hocko <redacted> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> --- mm/huge_memory.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 96dfe3f09bf6..7bb30e853335 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c@@ -2384,10 +2384,9 @@ static bool hugepage_vma_check(struct vm_area_struct *vma) * value (scan code). */ -static int hugepage_vma_revalidate(struct mm_struct *mm, - struct vm_area_struct *vma, - unsigned long address) +static int hugepage_vma_revalidate(struct mm_struct *mm, unsigned long address) { + struct vm_area_struct *vma; unsigned long hstart, hend; if (unlikely(khugepaged_test_exit(mm)))
@@ -2436,7 +2435,7 @@ static bool __collapse_huge_page_swapin(struct mm_struct *mm, if (ret & VM_FAULT_RETRY) { down_read(&mm->mmap_sem); /* vma is no longer available, don't continue to swapin */ - if (hugepage_vma_revalidate(mm, vma, address)) + if (hugepage_vma_revalidate(mm, address)) return false; } if (ret & VM_FAULT_ERROR) {
@@ -2487,7 +2486,7 @@ static void collapse_huge_page(struct mm_struct *mm, } down_read(&mm->mmap_sem); - result = hugepage_vma_revalidate(mm, vma, address); + result = hugepage_vma_revalidate(mm, address); if (result) goto out;
@@ -2514,7 +2513,7 @@ static void collapse_huge_page(struct mm_struct *mm, * handled by the anon_vma lock + PG_lock. */ down_write(&mm->mmap_sem); - result = hugepage_vma_revalidate(mm, vma, address); + result = hugepage_vma_revalidate(mm, address); if (result) goto out;
--
2.8.1
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